Automatic floating roof drain valve

Details Automatic floating roof drain valve Automatic floating roof drain valve

1978-11-03

1980-05-13

Cohan, Alan

Fluid handling

Diverse fluid containing pressure systems

Fluid separating traps or vents

220219, B65D 8718

Patent

active

042023661

ABSTRACT:
A drain valve for a floating roof tank, employing a float for controlling the opening and closing of the valve. The buoyancy of the float is adjusted by means of a calibration weight such that the float is buoyant in water and sinks in oil. The inlet into the valve compartment is separated from the float and valve seat compartments by partitions which prevent the valve from prematurely closing because of forces set up by the velocity of fluid flow through the system and also due to the reduction of fluid density because of air bubbles.

REFERENCES:
patent: 1801172 (1931-04-01), Patterson
patent: 2551404 (1951-05-01), Wiggins
patent: 2931534 (1960-04-01), Wiggins
patent: 3074587 (1963-01-01), Jennings
patent: 3491911 (1970-11-01), Fraylick

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